• 기술혁신연구
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• 제24권3호
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• pp.81-105
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• 2016

본 연구는 ICT산업의 연구개발투자에 따른 비용저감 효과를 계측하는데 그 목적이 있다. 일반적으로 연구개발투자는 제품혁신과 공정혁신을 유발하고, 또 이들은 각각 매출증대와 비용저감 효과를 견인하는 것으로 알려져 있다. 그러나 기 수행된 실증연구들을 살펴보면, 그 대부분이 연구개발투자의 매출증대 기여부분에 초점을 두고 있다. 이에 본 연구는 최근 주목받고 있는 ICT산업을 중심으로 연구개발투자의 비용저감 효과를 분석해 보았다. 이를 위해 초월대수 비용함수와 비용점유율 방정식을 설정하였으며, SUR방법을 통해 실증적으로 분석하였다. 그 분석결과, 연구개발투자에 따른 총비용의 감소효과는 유의한 것을 확인할 수 있었다. 추가적으로 연구개발투자와 각 생산요소들 간의 관계를 살펴보았는데, 연구개발투자와 중간투입은 상호 대체관계, 노동 및 자본과는 보완관계인 것으로 나타났다.

• 산업경영시스템학회지
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• 제35권4호
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• pp.211-218
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• 2012

We analyzed the effect of inventory pooling on the system where multiple depot was used to replenish retailers and where inventories are kept only on the depots. Inventory pooling consists of inventory integration and inventory exchange. We used simulation for checking the cost saving effect of reducing the number of depot (Inventory Integration) for the case when inventories kept on every depots are commonly used for all retailers when certain depot have stock out for their retailer assigned to them (Inventory Exchange) with the constraint of service level. Simulation on wide range of parameter settings results show that cost saving effect from inventory integration diminishes when transportation cost between depot and retailers or stock out cost, or retailer number increases. The effect becomes stronger when the demands on retailers have bigger variance or average. Also the results show that the cost saving effect from inventory exchange becomes stronger on the same situation when inventory integration effect becomes stronger.

• 한국지반환경공학회 논문집
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• 제4권4호
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• pp.73-84
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• 2003

본 연구에서는 검증시험결과를 활용한 말뚝기초의 경제적인 설계절차를 제안하였다. 그리고 비경제적인 말뚝기초의 설계관행을 해소하기 위하여 6개 사례를 선정하여 설계를 목적으로 한 말뚝 정재하시험 (즉, 검증시험)을 수행하고, 검증시험 결과를 활용하여 건설비용 절감효과를 분석하였다. 말뚝기초 건설비용 절감효과는, 말뚝의 하중지지능력을 확인할 수 있는 소구경 말뚝에서는 34 - 47 %로 나타났으며, 말뚝의 최대하중지지능력 확인이 곤란한 대구경 말뚝에서는 0 - 55 %로 나타났다.

• 전기학회논문지P
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• 제57권4호
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• pp.404-407
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• 2008

Because of directly receiving the thing in which a microwave is reflected and comparing the frequency, the microwave sensor with doppler effect completely overcomes the problem of the passive infrared sensor. The microwave sensor with doppler effect well operates about a temperature, the dust, and the peripheral noise because of being dull in the most of ambient conditions. The system developed in this research is the electricity saving detection sensor which it senses the real time action of a man as the microwave sensor and automatically turns on the electric lamp and turns off, minimizes the electrical energy consumption. Since the microwave sensor is not influenced in the light, the dust, and the natural element like the ambient temperature, the effectiveness is considered to be superior to the passive infrared sensor being used currently. There was the energy reduction effect more than about 60% in the performed example which established this system. When this was compared with the construction cost, the cost of establishing payback period was about 1-1.5 year. The microwave sensor with doppler effect developed from this research result is convinced in the future to do enough for the electric energy saving.

• 한국농공학회논문집
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• 제51권4호
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• pp.1-6
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• 2009

This study analyzed and evaluated the effect of agricultural water reduction by introducing automated agricultural water management using alternative cost approach. The approach is possible to evaluate none market property as an asset. The saved agricultural water was evaluated as none market property. As the alternative goods, Seongju and Donghwa dam, typical irrigation dams in domestic, were employed. The economic benefit from water saving effect of an automated agricultural water management was calculated as depreciation expense and maintaining cost of construction agricultural dam per saved agriculture water. As a result, the saved agriculture water was 8.5 million ton per year, and the economic benefit of it was $1.3{\sim}2.1$ million won.

• 한국자원식물학회지
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• 제8권3호
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• pp.297-302
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• 1995

감자 재배(栽培)에 있어서 기계(機械)를 이용(利用)하여 수확(收穫)의 생력화(省力化)로 생산비(生産費)를 절감(節減)하기 위해 본(本) 시험(試驗)을 수행(遂行)한 결과(結果)는 다음과 같다. 1. 기계(機械)를 이용(利用)한 감자 굴취수확(掘取收穫)은 관행인력수확(慣行人力收穫)에 비해 트랙터 후부(後部)에 굴취기를 이용(利用)한 것이 94%로 생력효과(省力效果)에서 관행인력수확(慣行人力收穫)에 비해 42-45%의 노력시간(努力時間)을 절약(節約)함으로 42-45%의 작업비(作業費)를 절감(節減)했다.

• 한국자원식물학회지
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• 제9권1호
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• pp.63-69
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• 1996

양파 재배(栽培)에 있어서 기계(機械)를 이용(利用)하여 수확(收穫)의 성력화(省力化)로 노동력(勞動力)과 생산비(生産費)를 절감(節減)하기 위해 본(本) 시험(試驗)을 수행(遂行)한 결과(結果)는 다음과 같다. 1. 기계(機械)를 이용한 양파 굴취수확(掘取收穫)은 관행인력굴취수확(慣行人力掘取收穫)에 비해 트랙터 후부(後部)에 굴취기(掘取機)를 부착(附着)해 서 수확(收穫)한 굴취수확(掘取收穫)이 90-93%로 성력효과(省力效果)는 가장 좋았다. 2. 트랙터 후부(後部)에 굴취기(掘取機)를 부착(附着)한 수확기(收穫機)의 성력효과(省力效果)는 관행인력수확(慣行人力收穫)에 비해 37%의 작업시간(作業時刊)을 절감(節減)하여 37%의 작업비(作業費)를 절멸(節滅)했다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2010년도 추계학술대회 초록집
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• pp.151.1-151.1
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• 2010

Natural gas hydrates (NGH) provide 170 gas volumes per unit volume of the medium and are easier to make with moderate pressure and temperature (40 bar at 3 C). Once they form, their preservation temperature is 20 C at 1 bar, which is much milder than the LNG preservation. In case of using the NGH, The small and medium sized gas well has advantages for development because of NGH's these characteristics. According to the cost evaluation report of Gudmundsson in Norway and the research of MES in Japan, the gas well that uses the NGH has a cost saving effect about 10~20% compared LNG. The effect depends on distance and production. However, cost saving and efficiency of liquefaction process is increased by the development of LNG liquefaction technology. Therefore, these factors have to be reflected in economic analysis. The purpose of this research is to compare the cost of Gas Supply Chain according to the transport type, distance and gas reserves. Especially, we consider not only the cost of facility but also the total cost (production cost, transport cost, etc).

• 한국경영과학회지
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• 제33권3호
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• pp.77-92
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• 2008

Commonality strategy is a popular design practice in designing a product line as it enables the firm cost saving and simplification in design, manufacturing, and distribution processes. However the issue of commonality has been mostly analyzed from a profit maximizing firm's perspective and, to our knowledge, there is no literature that deals with the issue from a different perspective. in this paper, we consider the issue of commonality strategy from a social welfare maximization perspective, and argue that commonality strategy used in designing of public goods can bring certain benefits not just for a firm but also for consumers, i.e., for society as a whole. While we assume certain cost saving in production process due to economies of scale under commonality strategy, we conceptualize two different effects of commonality strategy, utility effect due to cost saving and weighted-averaging effect, and show how these two effects interplay to determine the design of common attribute and desirability of commonality strategy. We also discuss how the implementation of commonality strategy differs under different objectives of a product line designer : social welfare and firm's profit maximization.

• 한국항공운항학회지
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• 제21권1호
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• pp.39-44
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• 2013

The amount of greenhouse gas (GHG) emissions has been increasing steadily over the last 4 years, averaging 6.8 percent a year, due to the growth of low cost carriers and the increased demand for air transportations. For the aviation GHG reduction, various fuel saving activities are implemented in many areas such as high-efficiency aircraft and bio-fuel development in the technical part and low carbon flight procedures, short cut route development in the operational approach. Among the various reduction technologies, we focused on low carbon flight procedures that are crucial to GHG reduciton and suggested a reduction effect according to target implementation rate using by fuel saving estimation data in each aircraft type.